Can dogs eat sugar?
Last reviewed June 2026 · Sourced from ASPCA & Merck Veterinary Manual
The short answer
Sometimes — with caution — dogs should only have small amounts of sugar. Avoid — empty calories Refined sugar.
Why be careful
Tooth decay, weight gain, diabetes risk.
What every dog owner should know
- Watch for sugar in human treats
What to do if your dog ate sugar
Stay calm, note how much was eaten, and contact your vet immediately. For urgent help, the ASPCA Animal Poison Control hotline is 888-426-4435. See our full step-by-step guide: Dog ate something toxic — what to do.
Avoid — empty calories
Puppy safety
Generally avoid feeding sugar to puppies. Their digestive systems are still developing and they're more sensitive to changes in diet, fat, sodium, and lactose than adults. If you've already given some, watch for vomiting, diarrhea, or lethargy and contact your vet if any appear.
What to do if your dog ate sugar
- Note how much was eaten and when. A small amount is rarely an emergency, but a large quantity may need vet attention.
- Watch for symptoms over the next 12–24 hours: vomiting, diarrhea, lethargy, loss of appetite, or changes in drinking/urination.
- Provide fresh water and skip the next meal if your pet seems unsettled — let their stomach calm down.
- Call your vet if symptoms appear or persist beyond 24 hours, or if the amount eaten was significant.
Better alternatives
If your dog likes sugar, they may also enjoy these safe options: